WAVECOM Decoder W-PCI/e, W-CODE, W

If an ALIS-2 system is identified the status line will display System: “XXXXXXXXh", where XXXXXXXXh denotes an eight digit hex id string.

AMSAT-P3D

AMSAT (Radio Amateur Satellite Corporation) OSCAR-40 (AMSAT Phase 3D) is the latest satellite in the

Phase 3 series of high altitude radio amateur satellites.

The satellite telemetry system may be monitored.

Parameter Value

Frequency range

Operation modes

Modulation

Symbol rate

Receiver settings

Input format(s)

Additional Info

VHF/UHF

FEC telemetry

BPSK

800 Bd (with Manchester coding)

FM, BW = 5 kHz

AF, IF

ITA-5

A complete telemetry frame consists of a 4 byte preamble, a 512 byte data set and a 2 byte CRC checksum. The 400 bps information is differentially encoded then EXORed with a 400 bps clock signal to create a Manchester coded PSK signal.

The P3 flight computer of AMSAT OSCAR-40 uses a radiation hardened Cosmac CDP-1802 microprocessor running at 100K instructions/sec. The operating system is called IPS, an acronym that translates as "Interpreter for Process Structures".

A small part of the computer’s 64 kBit memory is used by IPS as workspace. 256 bytes of data collected via a 128 channel ADC, and 128 bytes of digital data is stored in this area called the IPS "SysPage".

The "SysPage" covers a lot of measurement functions: Status, navigation, power and temperature.

The decoder is able to demodulate, decode, verify (CRC) and display the data content in binary or as text.

The so called "A" or "E" packets are processed further and the information is displayed in four sections:

Main status, temperatures, power and sensors.

From Options | Display Mode, All frames or Error free frames may be selected.

Selecting Options | Display offers the option of an ASCII or RAW bits display.

APCO-25

Project 25 (P25) or APCO-25 is a set of standards for digital radio communications for public safety, security, public service and commercial applications. It is standardized by Telecommunications Industry Association (TIA) and supports both voice and data transmissions. APCO-25 compliant technology is being deployed in several phases. Wavecom decoder currently supports only Phase 1 systems.

Parameter

Frequency range

Operation modes

Symbol rate

Modulation

Receiver settings

Input format(s)

Access method

Value

VHF, UHF

Digital voice and data (Phase 1)

4800 Bd

Continuous 4 Level FM (C4FM) - CQPSK

BW = 12.5 kHz

FDMA